And it all starts with a .pkg.
The vanilla Skate 3 PKG has bugs. You should find the official 1.02 update PKG file (usually around 300MB). Install it the same way you installed the base game ( File > Install Packages ). This update fixes board breaking glitches and improves stability on emulators.
If you use an ISO, you have to convert it to a JB folder anyway. The PKG saves you that step.
: Copy the PKG file to the root of a FAT32-formatted USB drive.
: Simply drag your Skate 3 PKG file into the RPCS3 window.
The .pkg format is the standard package manager file format used by Sony PlayStation 3 systems. It functions similarly to an executable installer on Windows ( .exe ) or a package on Linux ( .deb / .rpm ). It contains a structured collection of files, directories, and metadata required to install software onto the PS3 console.